Captiony

Project Overview

Captiony is a free, web-based subtitle editor designed to make video accessibility simple and efficient. The platform allows users to create, edit, and synchronize subtitles for their videos directly in the browser without requiring any software installation.

Key Features

Multi-format Support: Full support for SRT and VTT subtitle file formats
Real-time Synchronization: Edit and sync subtitles with video playback in real-time
Drag & Drop Interface: Intuitive file handling with drag-and-drop functionality
Export Functionality: Download edited subtitles in various formats
Browser-based: No installation required, works entirely in the web browser
Free to Use: Completely free subtitle editing solution

Technical Challenges & Solutions

Challenge 1: Video Synchronization

Implemented precise timing controls and visual waveform integration to ensure accurate subtitle-to-audio synchronization across different video formats.

Challenge 2: File Format Compatibility

Built robust parsers and exporters for multiple subtitle formats, ensuring seamless conversion between SRT and VTT while maintaining formatting integrity.

Challenge 3: Browser Performance

Optimized video processing and subtitle rendering to handle large files smoothly across different browsers and devices.

What I Learned

Video processing and HTML5 media APIs
Subtitle file format parsing and generation
Real-time synchronization algorithms
Browser-based file handling and drag-and-drop interfaces
Accessibility standards and inclusive design principles

Impact

Captiony democratizes video accessibility by providing content creators, educators, and accessibility professionals with a powerful, free tool to make videos more inclusive. The platform removes technical barriers and makes subtitle creation accessible to everyone.